﻿#region LicenseHeader

// Copyright 2012 The Trustees of Indiana University.  All rights reserved.
// 
// The Indiana University licenses this file to you under the Apache License, 
// Version 2.0 (the "License"); you may not use this file except in compliance 
// with the License.  You may obtain a copy of the License at 
// 
// http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software 
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
//  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  
// See the License for the specific language governing permissions and 
// limitations under the License.
// 
// @author Thilina Gunarathne (tgunarat@indiana.edu)

#endregion

#region

using System;

#endregion

namespace AzureMRCore.DataTypes
{
    /**
     * Use to store double[]
     */

    public class DoubleVectorValue : IValue

    {
        public double[] Value { get; set; }

        #region IValue Members

        public string GetTextValue()
        {
            return Value.ToString();
        }

        public Boolean ParseValue(object value)
        {
            if (value is double[])
            {
                Value = (double[]) value;
                return true;
            }
            return false;
        }


        public byte[] GetBytes()
        {
            byte[] bytes = new byte[Value.Length*8 + 4];
            Buffer.BlockCopy(BitConverter.GetBytes(Value.Length), 0, bytes, 0, 4);
            Buffer.BlockCopy(Value, 0, bytes, 4, Value.Length*8);

            return bytes;
        }

        public bool FromBytes(byte[] value)
        {
            int width = BitConverter.ToInt32(value, 0);
            Value = new double[width];
            Buffer.BlockCopy(value, 4, Value, 0, width*8);
            return true;
        }


        public long Size()
        {
            // return Value.Length*8;
            return long.MaxValue;
        }

        #endregion

        //public int vectorLength { get; set; }

        public static DoubleVectorValue GetInstance(double[] value)
        {
            DoubleVectorValue instance = new DoubleVectorValue {Value = value};
            return instance;
        }
    }
}